This work was supported by the Deutsche Forschungsgemeinschaft, the Fonds der Chemischen Industrie, the Volkswagen Stiftung, the Convex Corporation and the Netherlands Science Foundation (SON). We are indebted to Chemetall GmbH, Frankfurt a.M.(FRG) for a generous gift of cesium.
N-Cesiocarbazole ṁ pmdta and N-Potassiocarbazole ṁ pmdta (PMDTA = N,N,N′,N″,N″-Pentamethyldiethylenetriamine). Cation Size and Multihapto Bonding†
Article first published online: 30 DEC 2003
Copyright © 1989 by VCH Verlagsgesellschaft mbH, Germany
Angewandte Chemie International Edition in English
Volume 28, Issue 9, pages 1224–1226, September 1989
How to Cite
Gregory, K., Bremer, M., von Ragué Schleyer, P., Klusener, P. A. A. and Brandsma, L. (1989), N-Cesiocarbazole ṁ pmdta and N-Potassiocarbazole ṁ pmdta (PMDTA = N,N,N′,N″,N″-Pentamethyldiethylenetriamine). Cation Size and Multihapto Bonding. Angew. Chem. Int. Ed. Engl., 28: 1224–1226. doi: 10.1002/anie.198912241
- Issue published online: 30 DEC 2003
- Article first published online: 30 DEC 2003
- Manuscript Received: 28 MAR 1989
Both σ and π interactions should characterize the solid-state structures of salts such as N lithiopyrrole. This prediction has been only partially confirmed in the case of the lower alkali metals, but carbazole salts of the higher homologues potassium and cesium indeed show multihapto coordinations of eight and nine/eight, respectively. The structure of the Ci-symmetrical dimer of the cesium salt is shown as an example.